#define  _CRT_SECURE_NO_WARNINGS 1	
#include<stdio.h>

int main() {
	int a, b;
	scanf("%d %d", &a, &b);
	double h = b / 100.0;
	printf("%.2lf",a/(h*h));
	return 0;
}
//#include <stdio.h>

//int main()
//{
//    int weight, high;
//    scanf("%d %d", &weight, &high);
//
//    double high_metre = high / 100.0;
//
//    printf("%.2lf", weight / (high_metre * high_metre));
//
//    return 0;
//}